public static RenderElement::setAttributes(&$element, $class = array())
Sets a form element's class attribute.
Adds 'required' and 'error' classes as needed.
Parameters
array $element: The form element.
array $class: Array of new class names to be added.
Overrides ElementInterface::setAttributes
File
- core/lib/Drupal/Core/Render/Element/RenderElement.php, line 129
Class
- RenderElement
- Provides a base class for render element plugins.
Namespace
Drupal\Core\Render\Element
Code
public static function setAttributes(&$element, $class = array()) {
if (!empty($class)) {
if (!isset($element['#attributes']['class'])) {
$element['#attributes']['class'] = array();
}
$element['#attributes']['class'] = array_merge($element['#attributes']['class'], $class);
}
// This function is invoked from form element theme functions, but the
// rendered form element may not necessarily have been processed by
// \Drupal::formBuilder()->doBuildForm().
if (!empty($element['#required'])) {
$element['#attributes']['class'][] = 'required';
$element['#attributes']['required'] = 'required';
$element['#attributes']['aria-required'] = 'true';
}
if (isset($element['#parents']) && isset($element['#errors']) && !empty($element['#validated'])) {
$element['#attributes']['class'][] = 'error';
$element['#attributes']['aria-invalid'] = 'true';
}
}
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